Fix for bug#36873 containing the review results.

mysql-test/r/wait_timeout_func.result

-drop table if exists t1;
-## Creating new table t1 ##
-CREATE TABLE t1
-(
-id INT NOT NULL auto_increment,
-PRIMARY KEY (id),
-name VARCHAR(30)
-);
+SET @start_value= @@global.wait_timeout;
 '#--------------------FN_DYNVARS_186_01-------------------------#'
-## Creating new connection test_con1 ## 
-## Setting value of variable to 5 ##
-SET @@session.wait_timeout = 5;
-## Inserting record in table t1 ##
-INSERT into t1(name) values('Record_1');
-## Using sleep to check timeout ## 
-'#--------------------FN_DYNVARS_186_02-------------------------#'
-## Setting value of variable ##
-SET @@global.wait_timeout = 5;
-## Creating new connection test_con2 ## 
-INSERT into t1(name) values('Record_2');
-## Using sleep to check timeout ## 
+SET @start_time= UNIX_TIMESTAMP();
+connect (test_con1, localhost, root,,);
+SELECT @@session.wait_timeout = @@global.wait_timeout AS 'Expect 1';
+Expect 1
+1
+SET @@session.wait_timeout = <session_value>;
+connect (test_con2, localhost, root,,);
+SET @@session.wait_timeout = <session_value> - 1;
+connection default;
+wait until connections ready
+SELECT info FROM information_schema.processlist;
+info
+SELECT info FROM information_schema.processlist
 '#--------------------FN_DYNVARS_186_03-------------------------#'
-## Setting value of variable to 1 ##
-SET @@global.wait_timeout = 1;
-## Creating new connection ## 
-INSERT into t1(name) values('Record_3');
-## Using sleep to check timeout ##
-## We cannot test it further because the server stops due to wait_timeout ## 
-SELECT * from t1;
-ERROR HY000: MySQL server has gone away
+SET @@global.wait_timeout= <global_value>;
+SELECT @@session.wait_timeout = @start_value AS 'Expect 1';
+Expect 1
+1
+connect (test_con3, localhost, root,,);
+SELECT @@session.wait_timeout = @@global.wait_timeout AS 'Expect 1';
+Expect 1
+1
+connection default;
+SELECT info FROM information_schema.processlist;
+info
+SELECT info FROM information_schema.processlist
+SELECT UNIX_TIMESTAMP() - @start_time >= <global_value> + <session_value>;;
+UNIX_TIMESTAMP() - @start_time >= <global_value> + <session_value>;
+1
+SET @@global.wait_timeout= @start_value;

mysql-test/t/wait_timeout_func.test

@@ -11,93 +11,87 @@
 # Creation Date: 2008-03-07                                                   #
 # Author:  Salman Rawala                                                      #
 #                                                                             #
+# Modified: HHunger 2008-08-27 Simplified the test and replaced the sleeps.   #
+#                                                                             #
 # Description: Test Cases of Dynamic System Variable wait_timeout             #
 #              that checks the functionality of this variable                 #
 #                                                                             #
-# Reference: http://dev.mysql.com/doc/refman/5.1/en/                          #
-#  server-system-variables.html#option_mysqld_wait_timeouts                   #
+# Reference:                                                                  #
+#  http://dev.mysql.com/doc/refman/5.1/en/server-system-variables.html        #
 #                                                                             #
 ###############################################################################
 
 --source include/not_embedded.inc
 
---disable_warnings
-drop table if exists t1;
---enable_warnings
-
-##############################
-#   Creating two new tables  #
-##############################
-
---echo ## Creating new table t1 ##
-CREATE TABLE t1
-(
-id INT NOT NULL auto_increment,
-PRIMARY KEY (id),
-name VARCHAR(30)
-);
+SET @start_value= @@global.wait_timeout;
 
 
 --echo '#--------------------FN_DYNVARS_186_01-------------------------#'
 #######################################################################
-#   Setting initial value of interactive_timeout greater than sleep and
-#   verifying its behavior on session scope
+# 1. test of scope session
 #######################################################################
 
---echo ## Creating new connection test_con1 ## 
+SET @start_time= UNIX_TIMESTAMP();
+--echo connect (test_con1, localhost, root,,);
 connect (test_con1, localhost, root,,);
 connection test_con1;
 
---echo ## Setting value of variable to 5 ##
-SET @@session.wait_timeout = 5;
-
---echo ## Inserting record in table t1 ##
-INSERT into t1(name) values('Record_1');
-
---echo ## Using sleep to check timeout ## 
-sleep 4;
-
-
---echo '#--------------------FN_DYNVARS_186_02-------------------------#'
-#######################################################################
-#   Setting initial value of interactive_timeout greater than sleep and
-#   verifying its behavior on global scope
-#######################################################################
+# If not explicitly changed, @@session.wait_timeout equals @@global.wait_timeout.
+SELECT @@session.wait_timeout = @@global.wait_timeout AS 'Expect 1';
 
---echo ## Setting value of variable ##
-SET @@global.wait_timeout = 5;
+# Find a small value <> @@global.wait_timeout.
+let $session_value =
+`SELECT IF(@@global.wait_timeout <> 2 OR @@global.wait_timeout IS NULL, 2, 3)`;
+--replace_result $session_value <session_value>
+eval SET @@session.wait_timeout = $session_value;
 
---echo ## Creating new connection test_con2 ## 
+--echo connect (test_con2, localhost, root,,);
 connect (test_con2, localhost, root,,);
 connection test_con2;
 
-INSERT into t1(name) values('Record_2');
-
---echo ## Using sleep to check timeout ## 
-sleep 4;
-
+--replace_result $session_value <session_value>
+eval SET @@session.wait_timeout = $session_value - 1;
 
+--echo connection default;
+connection default;
 
+--echo wait until connections ready
+let $wait_condition= SELECT COUNT(*) = 1 FROM information_schema.processlist;
+--source include/wait_condition.inc
+SELECT info FROM information_schema.processlist;
 
 --echo '#--------------------FN_DYNVARS_186_03-------------------------#'
 #######################################################################
-#   Setting initial value of interactive_timeout less than sleep and
-#   verifying its behavior on global scope
+# 2. test of scope global
 #######################################################################
 
---echo ## Setting value of variable to 1 ##
-SET @@global.wait_timeout = 1;
+# Find a small value <> @@global.wait_timeout.
+let $global_value = $session_value + 1;
+--replace_result $global_value <global_value>
+eval SET @@global.wait_timeout= $global_value;
 
---echo ## Creating new connection ## 
+# Changing the @@global.wait_timeout has no influence on the
+# @@session.wait_timeout of already established sessions.
+SELECT @@session.wait_timeout = @start_value AS 'Expect 1';
+
+--echo connect (test_con3, localhost, root,,);
 connect (test_con3, localhost, root,,);
 connection test_con3;
 
-INSERT into t1(name) values('Record_3');
-
---echo ## Using sleep to check timeout ##
-sleep 5;
-
---echo ## We cannot test it further because the server stops due to wait_timeout ## 
---Error 2006
-SELECT * from t1;
+# If not explicitly changed, @@session.wait_timeout equals @@global.wait_timeout.
+SELECT @@session.wait_timeout = @@global.wait_timeout AS 'Expect 1';
+
+--echo connection default;
+connection default;
+# We can be sure that the connections test_con1 and test_con2 must be
+# established because both have already executed a SET @@session.wait_timeout.
+# This means they are or at least were visible within the processlist.
+# Therefore we can now simply wait till both disappear from the processlist.
+let $wait_condition= SELECT COUNT(*) = 1 FROM information_schema.processlist;
+--source include/wait_condition.inc
+SELECT info FROM information_schema.processlist;
+
+--replace_result $global_value <global_value> $session_value <session_value>;
+eval SELECT UNIX_TIMESTAMP() - @start_time >= $global_value + $session_value;
+SET @@global.wait_timeout= @start_value;